plat-sam: register CPU OPP clock for SCMI usage

Add the definitinon for 'AT91_SCMI_CLK_CPU_OPP'.
When the CPU OPP clock is available, add it to SCMI clock list.

Signed-off-by: Tony Han <tony.han@microchip.com>
Acked-by: Etienne Carriere <etienne.carriere@foss.st.com>

core/arch/arm/plat-sam/scmi_server.c

@@ -1026,6 +1026,15 @@ static TEE_Result sam_init_scmi_clk(void)
 		return res;
 	}
 
+	clk = at91_cpu_opp_clk_get();
+	if (clk) {
+		res = scmi_clk_add(clk, 0, AT91_SCMI_CLK_CPU_OPP);
+		if (res) {
+			EMSG("Failed to add CPU OPP clock to SCMI clocks");
+			return res;
+		}
+	}
+
 	return TEE_SUCCESS;
 }
 

core/include/dt-bindings/clock/at91.h

@@ -136,6 +136,7 @@
 #define AT91_SCMI_CLK_PROG_PROG2	81
 
 #define AT91_SCMI_CLK_SCKC_SLOWCK_32K	82
+#define AT91_SCMI_CLK_CPU_OPP		101
 
 #ifdef CFG_SAMA7G5
 #define AT91_SCMI_CLK_CORE_CPUPLLCK		4